'The focus on theoretical debates, and inclusion of multiple methodologies, is welcome, valuable, and informative.' Letitia Naigles, University of Connecticut

'… an excellent first step towards opening a dialog and closing the gap between generative and constructivist approaches to language learning, allowing progress beyond the traditional nature-nurture dialectic in language science … Readers will see how theory-driven investigation in language acquisition can advance our understanding of the unique human capacity for language.' Jeffrey Lidz, University of Maryland

'… an unusual and very important book. The question of how children acquire their native language is of tremendous interest to scholars in a broad range of fields. Not surprisingly, it has also led to many lively disagreements. Ambridge and Lieven have chosen to focus on these theoretical debates. The coverage of issues is impressive, but even more impressive is the extraordinarily careful and detailed analyses of competing theories and of the empirical data. The authors' treatments are fair and even-handed … The result is an extremely valuable contribution to the literature, and one that significantly advances our understanding of the field.' Jeff Elman, University of California, San Diego